VEGA 2/0145/11

 

Changes in the assemble of calcareous nannofossils during the great climatic changes


Duration:
2011-2013
Principal investigator:
Silvia Ozdínová
Investigators from institution:
Co-operating institutions and scientists:
Anotation:

Calcareous nannofossils are fossil remains of golden – brown, single-celled algae that live in the oceans. These algae make tini calcite plateles inside their cells, and these platelets (the calcareous nannofossils) move to the surface of the cell.The platelets fall off the cell and showly drift down to the bottom of the ocean. At this point they are part of. The calcite latelets are preserved in the rocks (mud or marl or sandy clay) and are the fossils that palaeontologists study. Great climatic changes appeared near the boundary Mesozoic/Paleocene, Paleocene/Eocene, Eocene/Oligocene, as well as during the geological units, e.g. Sarmatian brakisch trend in the sedimentary area. In the sedimentary records in basins of the Western Carpathians we can study on the basis calcareous nannofossils, foraminifers and litological profil determinated biostratigrafical dates and paleoecological conditions of the formerTetydian and Paratetydian oceans.